Sources
CR
Type
Size
Alignment
Movement

Ember

Huge Dragon (adult chromatic), Chaotic Evil

Armor Class 20 (special equipment)
Hit Points 270 (20d12 + 140)
Speed 40 ft., fly 80 ft., climb 40 ft.
STR
28
+9
DEX
10
+0
CON
25
+7
INT
17
+3
WIS
14
+2
CHA
22
+6
Saving Throws DEX +7, CON +14, WIS +9, CHA +13
Skills Perception +16, Religion +10, Stealth +14
Damage Immunities fire
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 26
Languages Abyssal, Common, Draconic
Challenge 22 (41,000 XP)

Traits

Calescent Aura. At the start of Ember's turn, Ember can force any number of creatures of his choice within 10 feet of himself to make a DC 22 Constitution saving throw. On a failed save, a creature takes 7 (2d6) fire damage and is frightened of Ember until the start of its next turn.

Legendary Resistance (5/Day). If Ember fails a saving throw, he can choose to succeed instead.

Special Equipment. In battle, Ember dons magical plate armor custom-forged for his use. While wearing the armor, Ember adds his Charisma modifier to his weapon damage rolls (included in the attack descriptions), and his AC can't be lower than 20.

Actions

Multiattack. Ember makes one Bite attack and two Claw attacks.

Bite. Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit:26 (2d10 + 15) piercing damage plus 13 (2d6 + 6) fire damage.

Claw. Melee Weapon Attack: +16 to hit, reach 5 ft., one target. Hit:22 (2d6 + 15) slashing damage.

Firestorm Breath (Recharge 5–6). Ember exhales roiling flames and ash in a 90-foot cone. Each creature in that area must make a DC 22 Dexterity saving throw. On a failed save, a creature takes 56 (16d6) fire damage and is pushed up to 30 feet away from Ember and knocked prone. On a successful save, a creature takes half as much damage with no other effects. If a creature is reduced to 0 hit points by this effect, the creature immediately dies, and its body is reduced to ash.

Bonus Actions

Alter Shape. Ember magically transforms into a vulture or a mage and retains his alignment, damage immunities, hit points, and Hit Dice, as well as his Intelligence, Wisdom, and Charisma scores. This transformation ends if Ember is reduced to 0 hit points or if he uses another bonus action to end it.

Legendary Actions

Pursuit. Ember moves up to 40 feet in a straight line toward one creature he can see. This movement ignores opportunity attacks.

Searing Bite (Costs 2 Actions). Ember makes one Bite attack. If the attack hits, it deals an additional 7 (2d6) fire damage.

Lore

Emperor Ariakas,